linux-imx

mmc: dw_mmc: Add support for ARC

Adapt Kconfig to include ARC in supported architectures

Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
Acked-by: Seungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>